We report on power, spectral linewidth, and mode purity for a cw
quantum cascade laser operated on a thermo-electric cooler. A totally noncryogenic nitric oxide monitor was constructed by integrating this laser with an astigmatic multipass cell and a thermo-electrically cooled infrared detector. The resulting instrument is capable of continuous unattended monitoring of ambient, atmospheric nitric oxide for several weeks with no operator intervention. The detection method was rapid sweep, direct absorption spectroscopy. A detection sensitivity of 0.03 parts in
is achieved with 30 s averaging time with a path length of
, corresponding to an absorbance path length product of
© 2006 Optical Society of America
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(140.5960) Lasers and laser optics : Semiconductor lasers
Lasers and Laser Optics
Original Manuscript: March 24, 2006
Manuscript Accepted: April 17, 2006
Vol. 1, Iss. 8 Virtual Journal for Biomedical Optics
David D. Nelson, J. Barry McManus, Scott C. Herndon, Joanne H. Shorter, Mark S. Zahniser, Stéphane Blaser, Lubos Hvozdara, Antoine Muller, Marcella Giovannini, and Jérôme Faist, "Characterization of a near-room-temperature, continuous-wave quantum cascade laser for long-term, unattended monitoring of nitric oxide in the atmosphere," Opt. Lett. 31, 2012-2014 (2006)
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
If you are accessing the full text through a member bundle, please use the Enhanced HTML link to gain access to the citation lists and other restricted features. Note that accessing both the PDF and HTML versions of an article will count as only one download against your account.
Contact your librarian or system administrator
Log in to access OSA Member Subscription